| 摘要 |
<p>An optical clock (200) for generating a series of optical clock pulses, comprises a laser source (202, 203, 206, 208, 210) for generating output having a plurality of spectral components ?1, ?2,....?N, an amplitude-modulator (212) arranged to cooperate with the laser source to produce a series of intermediate optical pulses each having the plurality of spectral components, and optical fibre (228) arranged to provide dispersion of each intermediate optical pulse to form a plurality of component pulses each corresponding to a spectral component and to compress each component pulse, the spectral width of each spectral component being sufficient to inhibit stimulated Brillouin scattering (SBS) of the component pulses within the optical fibre. The optical clock may be used for analogue-to-digital conversion of an electrical signal, in which application pulses of respective spectral components are demultiplexed and subsequently detected and digitised in parallel, providing for faster conversion.</p> |
